Hirokazu Nagura

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Hitachi, JP

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Patents Grantslast 30 patents

Information Patent Grant
AC motor control device and AC motor driving system
- Patent number 8,742,704
- Issue date Jun 3, 2014
- Hitachi, Ltd.
- Junnosuke Nakatsugawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control apparatus and method for linear synchronous motor
- Patent number 7,888,893
- Issue date Feb 15, 2011
- Hitachi, Ltd.
- Hirokazu Nagura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power transmission system for elevator
- Patent number 7,104,363
- Issue date Sep 12, 2006
- Kazuhisa Mori
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Elevator communications apparatus
- Patent number 6,481,531
- Issue date Nov 19, 2002
- Hitachi, Ltd.
- Hirokazu Nagura
- B66 - HOISTING LIFTING HAULING

Patents Applicationslast 30 patents

Information Patent Application
AC MOTOR CONTROL DEVICE AND AC MOTOR DRIVING SYSTEM
- Publication number 20120007528
- Publication date Jan 12, 2012
- Junnosuke Nakatsugawa
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Control Apparatus and Method for Linear Synchronous Motor
- Publication number 20100181945
- Publication date Jul 22, 2010
- HITACHI, LTD.
- Hirokazu Nagura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Control apparatus and method for linear synchronous motor
- Publication number 20060043921
- Publication date Mar 2, 2006
- Hirokazu Nagura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
ELEVATOR COMMUNICATIONS APPARATUS
- Publication number 20020157903
- Publication date Oct 31, 2002
- Hitachi, Ltd.
- Hirokazu Nagura
- B66 - HOISTING LIFTING HAULING
Information Patent Application
Elevator
- Publication number 20020112924
- Publication date Aug 22, 2002
- HITACHI LTD.
- Kazuhisa Mori
- B66 - HOISTING LIFTING HAULING